CN1218636C - Pirimicarb microemulsion and preparation process thereof - Google Patents
Pirimicarb microemulsion and preparation process thereof Download PDFInfo
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- CN1218636C CN1218636C CN 02149468 CN02149468A CN1218636C CN 1218636 C CN1218636 C CN 1218636C CN 02149468 CN02149468 CN 02149468 CN 02149468 A CN02149468 A CN 02149468A CN 1218636 C CN1218636 C CN 1218636C
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- microemulsion
- pirimicarb
- aphox
- water
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Abstract
The present invention relates to microemulsion and a preparation method thereof. The microemulsion uses pirimicarb as an effective component and comprises (by weight) 5% to 20% of primicarb, 10% to 20% of surface active agent, 10% to 30% of organic solvent, 5% to15% of cosolvent and surplus water.
Description
Technical field
The present invention relates to Aphox micro-emulsion form and preparation method thereof.
Background technology
Aphox (pirimicarb) is a carbamate insecticide, and nineteen sixty-five, 1969 as special-purpose aphicide popularization by Britain's ICI Imperial Chemical Industries exploitation.It is to inhale aphicide (except the cotten aphid) in the selectivity of a kind of efficient, moderate toxicity, low-residual, does not injure honeybee under the concentration of recommending, and Diptera pest is also had certain drug effect.Can be used for preventing and treating the aphid on fruit tree, cereal class, soft fruits, beans, wild cabbage, rape, lettuce, beet, potato, flowers and some ornamental plantss, quick-acting is good, and lasting effect is not long.Natural enemy of aphid such as ladybug, syrphus fly and aphid cocoon honeybee are had no adverse effects.
The Aphox formulation has wetting powder, smoke agent, missible oil, aqueous emulsion, aerosol, dispersible particulate agent etc.But do not see the report of micro-emulsion form.
(microemulsion, ME) be is matrix with water to microemulsion, utilizes physicochemical liquid-in-liquid dispersions system theoretical and that method is prepared is efficient, storing safety, low pollution novel form.This formulation oil bead diameter is 10～100nm, uses no or little organic solvent, cost and missible oil quite or lower slightly, active ingredient dispersity height, drug effect is higher by 10%～30% than missible oil usually.The general water content of microemulsion has not only been saved a large amount of organic solvents more than 40%, and has alleviated the pressure to environment greatly, and is significant for protection Agro-ecology balance, more helps the sustainable development of agricultural.
Summary of the invention
The purpose of this invention is to provide a kind of is the microemulsion formulation of active ingredient with the Aphox.
Another object of the present invention provides the preparation method of described preparation.
Said preparation active ingredient weight percentage is 1～50%, is preferably 5～20%.Said composition also comprises 10～25% surfactants in addition, 15～25% organic solvents, and cosolvent 5～15%, surplus is a water.
The surfactant that is fit to is selected from nonionic, anion and the mixed surfactant that No. 500,0201B, 0203B, 0204C, 2201, OP series, farming breast etc. have the well emulsify performance.
The organic solvent that is fit to is selected from dimethylbenzene, toluene and cyclohexanone etc.
The cosolvent that is fit to is selected from C
1-C
4-alcohols, for example methyl alcohol, ethanol, propyl alcohol, isopropyl alcohol and the tert-butyl alcohol, particular methanol and ethanol.
The present invention can also contain other auxiliary element such as stabilizing agent, antifreezing agent, urge bleeding agent etc.
Antifreezing agent can be for example ethylene glycol, propane diols, glycerine, polyethylene glycol, sorbierite, urea, sucrose, glucose and one or more mixture thereof.
Short bleeding agent can be for example azone, lauryl alcohol sodium sulphate, sodium lignin sulfonate, alkylphenol polyoxyethylene etc.
This microemulsion formulation prepares in a known manner, normally active ingredient is fully mixed with components such as surfactant, solvent and water.
Formulation of the present invention is a microemulsion, and the method for optimizing of using said preparation is a foliage-spray, and formulation rate is 75～150g a.i./ha usually.
Preparation of the present invention has good drug effect to homoptera pest.Can be used for preventing and treating the aphid on fruit tree, cereal class, soft fruits, beans, wild cabbage, rape, lettuce, beet, potato, flowers and some ornamental plantss, quick-acting is good, and lasting effect is not long.Natural enemy of aphid such as ladybug, syrphus fly and aphid cocoon honeybee are had no adverse effects.
Embodiment
The present invention describes with the following example, but does not limit the present invention.
Example of formulations 1:5% microemulsion
Dimethylbenzene 12%
Ethanol 10%
OP-10 10％
2201 8％
Water to 100%
Aphox dissolves fully with organic solvent, adds other compositions again, evenly mixes, and adds entry at last, can be made into microemulsion after fully stirring.Can be diluted to the clear liquid of any concentration to water.
Step according to identical with example of formulations 1 prepares following example of formulations.
Example of formulations 2:10% microemulsion
Aphox 10%
Dimethylbenzene 18%
Methyl alcohol 10%
OP-15 10％
2201 8％
Water to 100%
Example of formulations 3:10% microemulsion
Aphox 10%
Cyclohexanone 20%
Ethanol 10%
OP-10 12％
2201 10％
Water to 100%
Example of formulations 4:15% microemulsion
Aphox 15%
Dimethylbenzene 25%
Ethanol 10%
OP-10 12％
2201 12％
Water to 100%
The microemulsion physicochemical property of preparation is:
Outward appearance: as clear as crystal single-phase liquid;
Transparency temperature zone: 0～55 ℃;
Low-temperature stability: following 2 weeks layering, crystallization do not occur at 0 ℃;
Stability of emulsion: with the water-reducible emulsion-stabilizing of any ratio;
Ageing stability: normal temperature is stable down.
Claims (5)
1. microemulsion, the weight percentage of its each composition is:
Aphox 5～20%
Surfactant 10～20%
Organic solvent 15～20%
Cosolvent 5～15%
Surplus is a water.
2. according to the microemulsion of claim 1, wherein, surfactant is the mixture of OP series and 2201.
3. according to the microemulsion of claim 2, wherein, organic solvent is selected from: dimethylbenzene, toluene and cyclohexanone.
4. according to arbitrary microemulsion of claim 1～3, wherein, cosolvent is selected from C
1-C
4-alcohols.
5. according to the microemulsion of claim 4, wherein, cosolvent is selected from methyl alcohol and ethanol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02149468 CN1218636C (en) | 2002-11-21 | 2002-11-21 | Pirimicarb microemulsion and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02149468 CN1218636C (en) | 2002-11-21 | 2002-11-21 | Pirimicarb microemulsion and preparation process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1502240A CN1502240A (en) | 2004-06-09 |
| CN1218636C true CN1218636C (en) | 2005-09-14 |
Family
ID=34233672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02149468 Expired - Fee Related CN1218636C (en) | 2002-11-21 | 2002-11-21 | Pirimicarb microemulsion and preparation process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1218636C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101606517B (en) * | 2009-07-27 | 2013-03-20 | 深圳诺普信农化股份有限公司 | Pesticide emulsifiable concentrate preparation |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104222008B (en) * | 2013-06-21 | 2016-06-01 | 首伯农(北京)生物技术有限公司 | A kind of artificial a large amount of method producing wasp fly |
-
2002
- 2002-11-21 CN CN 02149468 patent/CN1218636C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101606517B (en) * | 2009-07-27 | 2013-03-20 | 深圳诺普信农化股份有限公司 | Pesticide emulsifiable concentrate preparation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1502240A (en) | 2004-06-09 |
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